Uno R3 Compatible Arduino Uno R3

The upgraded and original versions both use the MEGA328P as the main control chip, with the upgraded version using a more compact SMD package. This version uses the CH340G USB-to-serial chip, which is more cost-effective and compatible with Win7/Win8/Win10.

The interface is designed according to the original version, suitable for the original compilation software. The code can be seamlessly replaced.

Main Chip: ATMEGA328 Microcontroller
External Power Supply: 7-12V, recommended 9V
USB Cable Power Supply: 5V
EEPROM: 1K
Internal Flash Memory: 32K
Free USB Cable: 50CM
Clock Speed: 16MHz
SRAM: 2K
Digital I/O Pins: 14 (6 of which support PWM)

Label Explanation:

• Reset Button
• 3mm Positioning Hole
• D13 Indicator Light
• 14 Digital I/O Pins
• 12MHz Crystal Oscillator
• Square USB Port
• CH340G
• 5V Regulator Chip
• D13 Indicator Light
• 3.3V/5V Power Source
• External Power Socket (DC 7-12V)
• 6 Analog Input Pins
• Serial Port Indicator Light
• ICSP Connector
• MEGA328P

Who Uses Arduino?

Due to its open-source nature, ease of use, abundant community resources, and global technology sharing, Arduino has been widely favored by makers, STEAM educators, teachers, students, training institutions, engineers, artists, and programming enthusiasts since its release.